Determination of propagation-rate constant of vinylidene chloride by emulsion polymerization

Autor:	M. Nomura, H. Sakai, Y. Kihara, K. Fujita, T. Kodani
Rok vydání:	2001
Předmět:	Polymers and Plastics Organic Chemistry Kinetics Radical polymerization Analytical chemistry Emulsion polymerization Activation energy Chloride Vinyl chloride chemistry.chemical_compound Reaction rate constant chemistry Emulsion Polymer chemistry Materials Chemistry medicine medicine.drug
Zdroj:	Journal of Polymer Science Part A: Polymer Chemistry. 39:1005-1015
ISSN:	1099-0518 0887-624X
DOI:	10.1002/1099-0518(20010401)39:7<1005::aid-pola1076>3.0.co;2-z
Popis:	The propagation-rate constant of vinylidene chloride (VDC) was determined at 40 and 50 °C, respectively, by applying the so-called Ugelstad plot to the polymerization-rate data of the seeded and unseeded emulsion polymerizations of VDC. The values of the propagation-rate constant kp thus determined are kp = 64 dm3/mol · s at 50 °C and kp = 52 dm3/mol · s at 40 °C, respectively. From these kp values, the activation energy for propagation reaction was determined to be Ep = 4.2 kcal/mol, which is close to that of vinyl chloride (3.7 kcal/mol). © 2001 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 39: 1005–1015, 2001
Databáze:	OpenAIRE
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